Testing a machine that allows cleaning and testing fuel injectors 

Here is just a first pass to see if it would find why one head of the engine in my C5 was always reporting richer than the other head and now know why 


Will do a better video now that I know how this looks and publish that when I do it

Part two

Recleaned second injector from right that was not flowing the same as the others in first test
via ultrasonic machine
Same results in this test, so this injector had to be like this from the day it was new
Really shows the best case is having your old ones cleaned and flow match and same for new ones

Third test :

Switched to see spray pattern difference from the last tests of Ford SVO 30 red tops, which in a Corvette are 36 lb/hr
to these GM fuel injectors for the C5 Z06 which are 28 lb/hr

Being these have not been used for 10 plus years, I had them in the ultrasonic cleaner for about 20 minutes with the tester
pulsing the On times on and off

This final test combines testing of the
internal coil of injectors,
Leak down,
fuel pressure from 25 to 55 PSI,
injector pulse width on time from 3 to 20 mSec,
simulate engine RPMs from 400 to 6,000 RPMs

Sound heard is each injector's turning off and on as commanded pulse width
The video is about 12 minutes long and enough testing over 3 days to write a negative test review of this injector test machine and
send to Amazon under the Gold Vines member

The three styles of fuel injectors I tested, looking via under a microscope

C4 ZR-1
SVO 30
C5 Z06